No fictional biography of Conan can be reconciled with all of the published Robert E. Howard stories and Howard pastiches. Notes given in the GCD entries for stories, either adapted from earlier prose stories or original to the comics, that attempt to trace a chronology are, therefore, subject to debate. There exist several schools of “Conan Chronology” and they are detailed in Wikipedia at http://en.wikipedia.org/wiki/Conan_chronologies.